demarcation point
isp network | your network
---[fiber]---(ont)===[copper]===(router)===(wifi ap)
Now having laid out that nice neat little diagram, this is the real world
Things are messy, there is a real desire to consolidate boxes. If your network looks like below, My condolences, it sucks when you don't know where the demarcation point is. And I agree, In those cases it should probably be demarcated at the fiber line coming in.
Demarcation point
? ? ?
---[fiber]---(ont/router/ap)***[2.4GHz]***
The normal state of affairs is
Now having laid out that nice neat little diagram, this is the real world Things are messy, there is a real desire to consolidate boxes. If your network looks like below, My condolences, it sucks when you don't know where the demarcation point is. And I agree, In those cases it should probably be demarcated at the fiber line coming in.